baber/WOPTO huggingface dataset:
Patent JP-H1093354-A (JP)
Title: Two-stage linear power amplifier circuit
Inventor: KOBAYASHI KEVIN WESLEY
IPC: H03G7/08
Filed: 1997-08-07
Abstract: PROBLEM TO BE SOLVED: To enable mass-production, cost reduction, and miniaturization by providing a preliminary distortion driver amplifier circuit with a gain which increases as a function of electric power applied to an input terminal and include a 1st feedback loop having an active feedback transistor(TR). SOLUTION: To extend output linear characteristics of a coupled two-stage amplifier, a preliminary distortion active feedback driver amplifier 22 operates the amplitude and phase characteristics of an input RF signal RFin. For example, the driver amplifier 22 is provided with the characteristics that the gain increases and the insertion phase decreases as the input electric power increases so as to compensate an output power amplifier whose gain increase with its input. Then the base of a transistor Q4 which provides an active feedback loop is coupled with the collector of a power amplifier Q1 through a base tuning resistance Rbt and its emitter is coupled with the base of the power transistor Q1 through a series R-C network including a resistance Rbt and a capacitor Cfb.
Patent JP-H1155045-A (JP)
Title: Feed forward power amplifier
Inventor: HORI KAZUYUKI
IPC: H03F1/32
Filed: 1997-08-07
Abstract: PROBLEM TO BE SOLVED: To reduce gain fluctuation and the stability of gain satisfactorily by controlling a variable attenuator that is provided on a signal path between 1st and 2nd power distributors with a supervisory result of 1st synthesizer output power or an error amplifier output voltage level. SOLUTION: When gain fluctuation occurs because of the temperature change and the secular change of a main amplifier 13, the same amplitude condition of an error extraction loop is destroyed, a main signal component mixes into an error extraction loop output and the power level of an output signal of a 1st power synthesizer 25 is increased. In such cases, a level supervising means 20 supervises an output signal level of an error amplifier 26 and satisfies the same amplitude condition through the adjustment of a variable attenuator 12 which minimizes it. By performing a series of control, it is possible to maintain a state in which a gain change part of the amplifier 13 and an attenuation quantity change part of the attenuator 12 are always equal.  That is, because the attenuator 12 on the preceding stage cancels gain deviation of the amplifier 13, integrated gain of path which is formed by the amplifier 13 and the attenuator 12 can be kept constant.
Patent JP-H09115456-A (JP)
Title: Shadow mask structure
Inventor: KOU HOUSHIYUU
IPC: H01J29/07
Filed: 1996-08-13
Abstract: PROBLEM TO BE SOLVED: To provide, in a color cathode-ray tube, a shadow mask attaining color reproduction by assigning an electron beam to such phosphor, to prevent thermal local deformation produced by mutual welding of the shadow mask and supporting mask frame. SOLUTION: In a color cathode-ray tube, comprising a shadow mask attaining color reproduction by assigning three electron beams emitted from respective electron gun to each of respective phosphor, a shadow mask structure for color CRT is formed including a mask frame 2 supported by suspending at inside of a panel, a shadow mask 6 inserted into inner circumference of the mask frame 2, an elastic band 8 outwardly pressing the inner circumference of the skirt of the shadow mask 6 to be supported at the inner circumference of the mask frame 2.
Patent JP-H03115096-A (JP)
Title: Crane for warehouse
Inventor: HIRAMOTO TAKASHI
IPC: B66F9/07
Filed: 1990-08-10
Abstract: PURPOSE:To increase stability with the center of gravity lowered of a crane total unit by concentrically arranging a drive unit for lifting a carriage and a drive unit for running a wheel in a right-left transverse direction in one end part of a lower part frame. CONSTITUTION:A drive unit 24 for lifting a carriage 9, lifted along carriage guide struts 8a, 8b, is mounted onto one end part of a lower part frame 1 extended from the struts 8a, 8b. While a running drive wheel 3 is rotatably supported to one end part of the lower part frame 1 in a lower side of the above described lift-drive unit 24 simultaneously with a drive unit 31 for running a drive wheel 3 mounted in the horizontal sideward of the before described drive wheel 3 further in the horizontal outside of one end part of the lower part frame 1 in a manner wherein both the units 24, 31 are right-left arranged. By this constitution, by positioning the center of gravity of a crane total unit to a lower place while suppressing the extension length of one end part of the lower part frame 1 in a degree almost equal to when only the lift-drive unit 24 is mounted, utilization efficiency of space in a warehouse is enhanced.
Patent JP-H0494645-A (JP)
Title: Tea leaf steaming machine equipped with mechanism of removing fallen steamed leaf
Inventor: MIYAMURA TOSHIYUKI
IPC: A23F3/06
Filed: 1990-08-10
Abstract: PURPOSE:To obtain the title device of improving operation efficiency by forming a hole on the under surface of a covered barrel, further installing removing mechanism below the hole and continuously and automatically removing fine fallen steamed leaves dropping from mesh as of a rotary net barrel during steaming operation. CONSTITUTION:A hole 23 is formed along the longer direction on the under surface of a covered barrel 22 of a main body part consisting of a stationary barrel part 1, a rotary barrel part 2 and a stirring shaft 3 so that fine fallen steamed leaves, etc., leaking and falling from meshes of a rotary net barrel 21 are dropped through the hole 23. Further removing mechanism 4 is installed below the hole 23 and the fallen steamed leaves are received by the mechanism and removed.
Patent JP-S6372674-A (JP)
Title: Dihydropyridine compound
Inventor: JIIKUFURIITO GORUTOMAN
IPC: C07D211/90
Filed: 1987-08-28
Abstract: Blood-sugar-lowering dihydropyridines of the formula   <IMAGE>   in which R1 represents phenyl, naphthyl, thienyl, pyridyl, chromenyl or thiochromenyl, it being possible for the radicals mentioned each to carry up to 2 identical or different substituents from the series comprising halogen, alkyl, alkoxy and alkylthio with in each case up to 6 carbon atoms, fluoroalkyl and fluoroalkoxy with in each case up to 3 carbon atoms and 3 fluorine atoms, nitro and cyano, R2 represents straight-chain, branched or cyclic alkyl which has up to 8 carbon atoms, can be interrupted in the alkyl chain by an oxygen or a sulphur atom and can be substituted by halogen, phenyl, cyano, hydroxyl, amino, alkylamino or dialkylamino with in each case up to 3 carbon atoms per alkyl group or by N-benzylmethylamino, R3 represents straight-chain, branched or cyclic alkyl which has up to 6 carbon atoms, can be interrupted in the alkyl chain by an oxygen atom and can be substituted by halogen, hydroxyl, amino, phenyl, morpholino, carboxy or alkoxycarbonyl with up to 4 carbon atoms and R4 and R5 each represent hydroxyl, or R4 and R5 together represent -O-, or a physiologically acceptable salt thereof.
Patent JP-H0862685-A (JP)
Title: Camera
Inventor: NISHIO TETSUYA
IPC: G03C3/00
Filed: 1994-08-16
Abstract: PURPOSE: To prevent a film from being damaged because a movable light shielding window is inadvertently closed when the film is drawn out from a film cartridge. CONSTITUTION: This camera is provided with an obstruction member 52 set at a first position where the opening and closing action of the movable light shielding window executed by a movable light shielding window opening and closing member 60 is obstructed by linking with the driving of a film winding-up action when the film winding-up action is driven by a film driving means executed after the closing action of a cartridge chamber cover,  set at a second position where the opening and closing action of the movable light shielding window executed by the opening and closing member 60 is obstructed by linking with the driving of a film rewinding action when the film rewinding action is driven by the film driving means and set at a third position where the opening and closing action of the movable light shielding window executed by the opening and closing member 60 is allowed by kinking with the driving of the film winding-up action at the driving time of the film winding-up action executed after the rewinding action of the film is finished.
Patent JP-H0375472-A (JP)
Title: Cold storage type cold warehouse
Inventor: NAGAI JUNICHI
IPC: F25D16/00
Filed: 1989-08-18
Abstract: PURPOSE:To eliminate purchasing and maintaining managements of a cold storage stock warehouse, and to effectively utilize an installation and staying space in a station by providing a second heat insulation box formed adjacent to a first heat insulation box, and a cooling chamber formed through a heat insulation plate in the second box. CONSTITUTION:A cold storage chamber cooling chamber 12 is held at a temperature(e.g., about -40 deg.C) lower than that in a cold insulation chamber 9 by cold storage operation, but a second heat insulation box 10 for forming the chamber 12 is formed of a cabinet containing a heat insulator. Since static pressures in the vicinities of a discharge air passage 24 and a suction air passage 25 as a connector of the first box 1 with the second box 10 both become positive at the time of operation of a cooling fan 19, the air is not invaded into the chamber 12 in the chamber 9. On the other hand, when cold accumulator 21 starts to store cold, a battery 31 starts charging and the chamber 9 insulates simultaneously. Thus, cold insulation and refrigeration insulation can be stored to effectively use an installation and staying space in a station.
Patent JP-H0375028-A (JP)
Title: Vacuum cleaner and heat pipe and dust collecting bag used therefor
Inventor: SOEJIMA MASAKUNI
IPC: A47L7/04
Filed: 1989-08-18
Abstract: PURPOSE:To increase the temperature in a dust collecting chamber and kill mites without utilizing a heater or other heating elements by providing the evaporation section of a heat pipe in a fan motor chamber, and providing a condensation section in the dust collecting chamber. CONSTITUTION:A fan motor chamber 3 having a fan motor 1 on the exhaust side of a vacuum cleaner main body 2, a dust collecting chamber 4 storing a dust collecting bag 5 on the suction side, and a heat pipe 8 are provided. The heat pipe 8 is fitted so that an evaporation section 8a is located in a fan motor chamber 3 and a condensation section 8b is located in a dust collecting chamber 4. A metal heat transmitting plate 12 surrounding the dust collecting bag 5 and having opening sections on the upper section and the fan motor 1 side is provided on the condensation section 8b of the heat pipe 8. The evaporation section 8a is heated by the exhaust heat of the fan motor 1 operated during the cleaning work, heat can be transmitted to the condensation section 8b, and the temperature in the dust collecting chamber 4 can be increased by the discharge of the condensation heat by the condensation section 8b. The dust collecting bag 5 is stored in the metal heat transmitting plate 12, heat transmission from the condensation section 8b of the heat pipe 8 to the dust collecting bag 5 can be further improved, thus mites can be surely killed.
Patent JP-S60107080-A (JP)
Inventor: AKAGAMI REIJI
IPC: G09B15/00
Filed: 1983-11-15
Abstract: (57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。
Patent JP-H0876995-A (JP)
Title: Microprocessor
Inventor: NAKAMURA KENJIRO
IPC: G06F9/30
Filed: 1994-09-07
Abstract: PURPOSE: To simplify synchronous output processing executed by software and to remove the processing load of a CPU in a system (a synchronous output mechanism) for preparing a synchronous signal output delayed for a fixed time from an input signal by the use of a microprocessor. CONSTITUTION: An edge signal from an edge detecting part 11, edge input timing data from an input capture part 12 and delay amount data from a software control part 14 are read out, the edge input timing data are added to the delay amount data to calculate signal output timing and output timing and output logic are commanded to a delay signal output part 15. At a moment when current time from a free running counter part 13 coincides with output timing from an automatic time delay part 16, the output part 15 latches output logic outputted from the delay part 16 and outputs the logic to the external to output a synchronous delay signal.
Patent JP-H0958622-A (JP)
Title: Heat-sealing method
Inventor: NOZU MASAHIRO
IPC: B65B51/10
Filed: 1995-08-22
Abstract: PROBLEM TO BE SOLVED: To surely perform a fusing without generating blister due to air reservoirs. SOLUTION: Sheet materials 21a and 21b for which a resin film, a resin expanded body, and a deposited resin layer are laminated in order from the internal surface to the external surface respectively, are carried under a state wherein the end parts are aligned. At Y point, needle holes which penetrate respective sheet materials are formed by needles 37a-37c on the sheet materials 21a and 21b. The areas where the needle holes are made are carried to X point only by a distance L. At the X point, the sheet materials 21a and 21b are press- held by a back-up bar 27 and periphery holding bars 45a and 45b, and then, are thermally press-bonded by a heated sealing plate 25.
Patent JP-H0633795-A (JP)
Title: Freeze preventing device for gas turbine intake filter
Inventor: TSUKAGOSHI KEIZO
IPC: F02C9/18
Filed: 1992-07-17
Abstract: PURPOSE:To obtain a freeze preventing device of small loss for a gas turbine intake filter by extracting intake filter freeze preventing air from a low pressure stage, guided to a high pressure stage side through an extraction path and injected to the intake filter from an extraction pipe. CONSTITUTION:A gas turbine 4 is provided in an outlet side of a combustor 3, and an intake filter 2 is provided in a suction side of an actual flow compressor 1 directly connected to the gas turbine 4. A chamber, along an external wall surface of a high pressure stage casing of the axial flow compressor 1 from a lower stage, is formed of an extraction path 5. The path is connected to an extraction pipe 7 through a pipe joint 6, and the other end of the extraction pipe 7 is connected to the intake filter 2. When an extraction adjusting valve 8 is opened when provided with apprehension of freeze or the like in the intake filter 2, air in a low stage of the axial flow compressor 1 flows in the extraction path 5 to increase the temperature itself by cooling the external wall of a high pressure stage side, and the air is injected to the intake filter 2 from the extraction pipe 7, to prevent the intake filter 2 from freezing. Thus, compression efficiency is improved to reduce an amount of freeze preventing air.
Patent JP-H0961191-A (JP)
Title: Angle sensor
Inventor: HONDA SHUICHI
IPC: G01D5/18
Filed: 1995-08-22
Abstract: PROBLEM TO BE SOLVED: To provide an angle sensor capable of accurately outputting the output voltage corresponding to the thickness of a material to be detected by bearing a rotary shaft by a plurality of bearing members and extending a detecting rod between the plurality of bearing members. SOLUTION: A rotary shaft 2 an angle sensor 20 is borne by two bearing members 1a, 1b, a detecting rod 7 is mounted between the members 1a and 1b, and further the rod 7 is guided out from a guide window 8f. Accordingly, when the force to be brought into contact with the element to be detected of a roller 13 is applied to the shaft 2 via the rod 7, the voltage corresponding to the rotary angle of the shaft 2 is accurately output by the scarce change of the direction of the shaft 2. Since the movement of the rod 7 is limited by the window 8f, the jumping of the rod 7 can be prevented when the element to be detected is abruptly moved. The bearing member may be a roll bearing using a spherical or cylindrical rolling member.
Patent JP-H0284691-A (JP)
Title: Display device of electronic musical instrument
Inventor: NAKAMURA TOSHIHISA
IPC: G10H1/32
Filed: 1989-08-19
Abstract: PURPOSE:To improve operability and to allow the immediate recognition of 'in what use states are respective memory means' by providing a display means which indicates the use states of plural sets of the memory means. CONSTITUTION:The states in which the respectively corresponding acoustic signals are inputted and set in 8 memory areas (T1 to T8) of the waveform memories are indicated; for example, the acoustic signal of the low tone region of a piano as a tone 1 (T1), the acoustic signal of the high tone region of the piano as a tone 3 (T3), etc.,... are recorded therein and nothing is recorded in the other areas. A CPU supplies the recoding state information indicating the recording states to the respective memory areas to a latch 181 and sets the same. An operator is, therefore, able to visually recognize from this display that the performance by the tone 1 (T1) and tone 3 (T3), i.e. piano sounds recorded in the memory areas 1, 3 is executable. The display to indicate whether the respective memory means are already recorded or not or can produce sounds or not is executed by the display part 18 in such a manner, by which the operability is improved.
Patent JP-S60107013-A (JP)
Title: Zoom lens
Inventor: HISADA TAKAKI
IPC: G02B1/04
Filed: 1983-11-16
Abstract: PURPOSE:To reduce the weight and cost of a zoom lens while performing temperature compensation sufficiently by composing a variable power system of the 1st, the 2nd, and the 3rd groups successively from an object side, and using only plastic lenses for the 1st and the 3rd groups and a plastic and a glass lens for the 2nd group. CONSTITUTION:The 1st group which is movable for focusing consists of a negative lens l1 and a positive lens l2 which are both made of plastic. The 2nd group as a variator consists of a negative plastic lens l3 and a positive glass lens l6. The 3rd group as a compensator consists of a positive plastic lens l5 and holds an image plane constant. The 4th fixed lens group consists of plural lenses l6, l7, and l8 and form an image in the image forming surface of the variable power system on a screen 9. The three groups constituting the variable power system should be in specific power relation so as to specify the movement extent of the image forming plane due to temperature variation within a permissible range. Further, the relation between values nu of glass and plastic is fixed because of the chromatic aberration compensation of the 2nd group.
Patent JP-H1078675-A (JP)
Title: Crosslinked and fixed toner image forming method
Inventor: DE MEUTTER STEFAAN
IPC: G03G7/00
Filed: 1997-07-25
Abstract: PROBLEM TO BE SOLVED: To form a toner image having improved resistance to external influence. SOLUTION: Toner particles each contg. a reactive group (RGA) are imagewise deposited on a substrate contg. a reactive group (RGB) and the reactive group RGA is allowed to react with the reactive group RGB to harden the toner particles. The reactive groups RGA, RGB are selected from among epoxy, aldehyde, hydroxyl, carboxyl, mercapto, amino and amido groups so that a reaction pair is formed.
Patent JP-H0495870-A (JP)
Title: Measuring method for grain size
Inventor: SHIBATA SABURO
IPC: G01N29/00
Filed: 1990-08-13
Abstract: PURPOSE:To measure easily and in a non-destractive state by computing a frequency distribution area, making backscattering noises of the time when ultrasonic waves continuously changed in frequency are propagated within a measured object analyzing a frequency, and integrating those results. CONSTITUTION:An ultrasonic wave probe 13 is put on a measured object 11 consisting of metal and ultrasonic waves continuously changed in frequency are transmitted from the probe 13 by an ultrasonic transceiver 15. The ultrasonic waves make irregular reflection at a grain boundary 14 within the measured object 11 when propagated through the measured object 11, and the backscattering noises 19 turn back halfway. The frequency and backscattering noise strength are integrated and the frequency distribution area is computed after these noises 19 are analyzed by a frequency analyzer 29 and the relation of the frequency and the backscattering noise strength are computed. Next, a grain size can be measured simply, quickly and in a non-destructive state on checking the frequency distribution area value with the previously prepared relation of grain size and frequency distribution area because proportional relation exists between a frequency distribution area and a grain size.
Patent JP-S6370134-A (JP)
Title: Pressure sensor
Inventor: SAKURADA OKINORI
IPC: G01L9/16
Filed: 1986-09-12
Abstract: PURPOSE:To obtain a highly reliable pressure sensor, by filling a groove provided on a magnetic core with non-magnetic material until it becomes flush with the end of the magnetic core on the side of a spacer. CONSTITUTION:A groove 2 of a magnetic core 1 made of ferrite is embedded with a coil 3 and non-magnetic material 4. An amorphous magnetostrictive metal 8 is placed between the magnetic core 1 and an orifice plate 6 through a spacer 7. An orifice plate hole 11 which the amorphous magnetostrictive metal 8 adjoins is full of oil and when a pressure outside the sensor distorts the amorphous magnetostrictive metal 8 through the oil, a magnetic resistance of a magnetic path composed of the amorphous magnetostrictive metal 8 changes, thereby enabling the detection of a pressure. In this case, the non- magnetic material 4 fills the core groove 2 until it becomes flush with the bottom of the core 1, thereby preventing the destruction of the amorphous magnetostrictive metal 8 under an excessive pressure.
Patent JP-H0766540-A (JP)
Title: Soldering method for printed board
Inventor: KODACHI TAKASHI
IPC: H05K1/11
Filed: 1993-08-30
Abstract: PURPOSE:To make solder bumps (fillets) at lead terminal bonding parts large and to prevent a failure due to a crack from being generated in the soldered parts of these lead terminals. CONSTITUTION:In a method of soldering a printed board, which dips the side of the rear of the printed board 1 in a solder in a wave soldering tank and solders lead terminals 9 of an electrical component 8 on conductive foil lands 5 on the side of the rear of the board 1, conductive foil lands 11, which are not used for mounting components, are kept provided in close contact to the lands 5 or in close proximity to the lands 5 at positions in the rear of the lands 5 on the board 1 rear to the direction to dip the side of the board rear in the solder of wave soldering. After that, the side of the board 1 rear is dipped in the solder in the wave soldering tank.
Patent JP-H0376729-A (JP)
Title: Smc and its preparation
Inventor: TAKAHARA YOICHIRO
IPC: C08J5/24
Filed: 1989-08-21
Abstract: PURPOSE:To prepare and SMC giving an excellent surface and being lighter than a conventional SMC and suitable for an automobile exterior panel by causing the front side and rear side of the SMC to have different CaCO3 concns. CONSTITUTION:In an SMC comprising a resin mixed with CaCO3, glass fiber, etc., the distribution of CaCO3 concn. in a section of the SMC is made such that the CaCO3 concn. at the front side is different from that at the rear side. For example, in producing an SMC by feeding a resin A to a running carrier film 1 to form a resin layer A, feeding a resin B to another running carrier film 2 to form a resin layer B, and joining the both carrier films 1 and 2 together, the both resins are caused to have different CaCO3 concns. Thus is prepd. an SMC giving an excellent surface being lighter than a conventional SMC and suitable for an automobile exterior panel.